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Laboratory Test Directory

Tetrahydrobiopterin & Neopterin Profile, CSF


Name Method Department Units
Tetrahydrobiopterin & Neopterin Profile, CSF High performance liquid chromatography
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Specimen Requirements

Reasons for Rejection

  • Specimen not processed at bedside
  • Not received at proper temperature


Obtain the proper collection tubes from the laboratory and fill each tube to the line as indicated. Place the tubes on ice at the bedside.Freeze at -80 C as soon as possible. IF the sample is blood contaminated, the tubes should immediately be centrifuged (prior to freezing) and the clear CSF transferred to new similarly labeled tubes then frozen and stored at -80 C ASAP.

CPT Code

  • 82542